When I put inLoop()
method in a while loop, then the server never runs.
It terminates but I want the server to continuously send bytes to the client again and again.
How do I do that ?
SimpleSPPServer -
public class SimpleSPPServer {
//start server
private void startServer() throws IOException{
//Create a UUID for SPP
UUID uuid = new UUID("1101", true);
//Create the servicve url
String connectionString = "btspp://localhost:" + uuid +";name=Sample SPP Server";
//open server url
StreamConnectionNotifier streamConnNotifier = (StreamConnectionNotifier)Connector.open( connectionString );
//Wait for client connection
System.out.println("\nServer Started. Waiting for clients to connect...");
StreamConnection connection=streamConnNotifier.acceptAndOpen();
while(true)
{
inLoop(connection);
}
}
public void inLoop(StreamConnection connection) throws IOException
{
RemoteDevice dev = RemoteDevice.getRemoteDevice(connection);
System.out.println("Remote device address: "+dev.getBluetoothAddress());
System.out.println("Remote device name: "+dev.getFriendlyName(true));
//send response to spp client
OutputStream outStream=connection.openDataOutputStream();
DataOutputStream mmOutStream = new DataOutputStream(outStream);
byte[] bb1 = new byte[] {
(byte)0x7D, (byte)0x43, (byte)0x92, (byte)0x05, (byte)0x0E,
(byte)0x2E, (byte)0x0A };
System.out.println("Writing Bytes...");
try
{
//mmOutStream.writeByte(bb[k]);
mmOutStream.write(bb1, 0, bb1.length);
Thread.sleep(5000);
//mmOutStream.write(bb2, 0, bb2.length);
}
catch (IOException e)
{
e.printStackTrace();
}
catch (NullPointerException e)
{
} catch (Exception e) {
e.printStackTrace();
}
PrintWriter pWriter=new PrintWriter(new OutputStreamWriter(mmOutStream));
try {
mmOutStream.flush();
} catch (IOException e) {
e.printStackTrace();
}
pWriter.flush();
pWriter.close();
}
public static void main(String[] args) throws IOException {
//display local device address and name
LocalDevice localDevice = LocalDevice.getLocalDevice();
System.out.println("Address: "+localDevice.getBluetoothAddress());
System.out.println("Name: "+localDevice.getFriendlyName());
SimpleSPPServer sampleSPPServer=new SimpleSPPServer();
sampleSPPServer.startServer();
}
Exception -
Exception in thread "main" java.io.IOException: Stream cannot be reopened
at com.intel.bluetooth.BluetoothRFCommConnection.openOutputStream(BluetoothRFCommConnection.java:190)
at com.intel.bluetooth.BluetoothRFCommConnection.openDataOutputStream(BluetoothRFCommConnection.java:213)
at SimpleSPPServer.inLoop(SimpleSPPServer.java:52)
at SimpleSPPServer.startServer(SimpleSPPServer.java:41)
at SimpleSPPServer.main(SimpleSPPServer.java:104)
Take the opening and closing of the stream out of doLoop()
. Open the stream before you start the loop with while. Close the stream never. Or when the loop is done.